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authorIlya Dryomov <idryomov@gmail.com>2012-06-22 12:24:13 -0600
committerChris Mason <chris.mason@fusionio.com>2012-07-02 15:39:17 -0400
commit2b6ba629b5aac51e7099efbb43e2b403213aa7fb (patch)
tree0a36f4adb14a57fdf4ee1dafa957927b6a6f9203 /fs/btrfs/disk-io.c
parent68310a5e42f93c2242ec1836c3b18d531e0065e2 (diff)
downloadlinux-2b6ba629b5aac51e7099efbb43e2b403213aa7fb.tar.gz
Btrfs: resume balance on rw (re)mounts properly
This introduces btrfs_resume_balance_async(), which, given that
restriper state was recovered earlier by btrfs_recover_balance(),
resumes balance in btrfs-balance kthread.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
-rw-r--r--fs/btrfs/disk-io.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 3a7961ba161e..8cc47103a32e 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2490,17 +2490,23 @@ retry_root_backup:
 		goto fail_trans_kthread;
 	}
 
-	if (!(sb->s_flags & MS_RDONLY)) {
-		down_read(&fs_info->cleanup_work_sem);
-		err = btrfs_orphan_cleanup(fs_info->fs_root);
-		if (!err)
-			err = btrfs_orphan_cleanup(fs_info->tree_root);
+	if (sb->s_flags & MS_RDONLY)
+		return 0;
+
+	down_read(&fs_info->cleanup_work_sem);
+	if ((ret = btrfs_orphan_cleanup(fs_info->fs_root)) ||
+	    (ret = btrfs_orphan_cleanup(fs_info->tree_root))) {
 		up_read(&fs_info->cleanup_work_sem);
+		close_ctree(tree_root);
+		return ret;
+	}
+	up_read(&fs_info->cleanup_work_sem);
 
-		if (err) {
-			close_ctree(tree_root);
-			return err;
-		}
+	ret = btrfs_resume_balance_async(fs_info);
+	if (ret) {
+		printk(KERN_WARNING "btrfs: failed to resume balance\n");
+		close_ctree(tree_root);
+		return ret;
 	}
 
 	return 0;